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SE308117B - - Google Patents

Info

Publication number
SE308117B
SE308117B SE1689/65A SE168965A SE308117B SE 308117 B SE308117 B SE 308117B SE 1689/65 A SE1689/65 A SE 1689/65A SE 168965 A SE168965 A SE 168965A SE 308117 B SE308117 B SE 308117B
Authority
SE
Sweden
Prior art keywords
melamine
gaseous mixture
vertical
gas
flow path
Prior art date
Application number
SE1689/65A
Other languages
English (en)
Inventor
J Marten
Original Assignee
Chemical Construction Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chemical Construction Corp filed Critical Chemical Construction Corp
Publication of SE308117B publication Critical patent/SE308117B/xx

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006—Controlling or regulating processes
    • B01J19/002—Avoiding undesirable reactions or side-effects, e.g. avoiding explosions, or improving the yield by suppressing side-reactions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/2415—Tubular reactors
    • B01J19/242—Tubular reactors in series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00121—Controlling the temperature by direct heating or cooling
    • B01J2219/00123—Controlling the temperature by direct heating or cooling adding a temperature modifying medium to the reactants
    • B01J2219/00126—Cryogenic coolants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00121—Controlling the temperature by direct heating or cooling
    • B01J2219/0013—Controlling the temperature by direct heating or cooling by condensation of reactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00132—Controlling the temperature using electric heating or cooling elements
    • B01J2219/00135—Electric resistance heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/0015—Controlling the temperature by thermal insulation means
    • B01J2219/00155—Controlling the temperature by thermal insulation means using insulating materials or refractories
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/54—Venturi scrubbers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Degasification And Air Bubble Elimination (AREA)
  • Physical Water Treatments (AREA)
SE1689/65A 1964-02-11 1965-02-10 SE308117B (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US344020A US3290308A (en) 1964-02-11 1964-02-11 Synthesis of pure melamine

Publications (1)

Publication Number Publication Date
SE308117B true SE308117B (da) 1969-02-03

Family

ID=23348700

Family Applications (1)

Application Number Title Priority Date Filing Date
SE1689/65A SE308117B (da) 1964-02-11 1965-02-10

Country Status (7)

Country Link
US (2) US3290308A (da)
BE (1) BE659588A (da)
DE (1) DE1545656A1 (da)
FR (1) FR1451252A (da)
GB (1) GB1101861A (da)
NL (1) NL6501633A (da)
SE (1) SE308117B (da)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6801577A (da) * 1968-02-02 1969-08-05
US3593968A (en) * 1968-09-26 1971-07-20 Stone & Webster Eng Corp Rapid cooling for high-temperature gas streams
US3615247A (en) * 1968-12-23 1971-10-26 Phillips Petroleum Co Modified combustion zone in a thermally insulated apparatus
NL6919152A (da) * 1969-12-20 1971-06-22
US3756580A (en) * 1972-01-31 1973-09-04 Peabody Engineering Corp Gas washing apparatus
DE3031124A1 (de) * 1980-08-18 1982-04-08 Basf Ag, 6700 Ludwigshafen Verfahren zur abtrennung von fluessigem harnstoff aus den abgasen der melaminsynthese
US4565867A (en) * 1984-01-05 1986-01-21 Melamine Chemicals, Inc. Anhydrous high-pressure melamine synthesis
AT397214B (de) * 1992-03-30 1994-02-25 Chemie Linz Gmbh Vorrichtung zur abscheidung von melamin
DE4211763A1 (de) * 1992-04-08 1993-10-14 Chemie Linz Deutschland Vorrichtung zur Abscheidung von Melamin
CN109529397B (zh) * 2018-12-28 2024-07-02 四川金象赛瑞化工股份有限公司 一种凝华结晶设备及结晶方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2575497A (en) * 1951-11-20 Sheetsxsheet i
US3310558A (en) * 1967-03-21 Melamine recovery
US2918467A (en) * 1959-12-22 Production of melamine
US2755887A (en) * 1956-07-24 Melamine purification
US3132143A (en) * 1964-05-05 Process for recovering melamine
US2890999A (en) * 1955-11-22 1959-06-16 Exxon Research Engineering Co Quenching fluid coker vapors
US3057700A (en) * 1959-10-12 1962-10-09 Chemical Construction Corp Phosphoric acid process
US3116348A (en) * 1960-07-27 1963-12-31 Cottrell Res Inc Gas treating device
BE607793A (fr) * 1960-09-05 1962-03-05 Stamicarbon Procédé pour la préparation de mélamine pure

Also Published As

Publication number Publication date
NL6501633A (da) 1965-08-12
FR1451252A (fr) 1966-01-07
BE659588A (da) 1965-08-11
US3451787A (en) 1969-06-24
US3290308A (en) 1966-12-06
GB1101861A (en) 1968-01-31
DE1545656A1 (de) 1969-06-26

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